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学者姓名：杨光绪
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Development of sustainable solvents for biomass biorefining remains a pivotal challenge of green chemistry. This study presented a circular biorefining strategy that valorized hemicelluloses into biobased solvent diformylxylose (DFX; Hansen solubility parameter: 21.4 MPa-1/2) for acetal-protection pretreatment. The DFX-H2O cosolvent system (90/10, w/w), with addition of formaldehyde and HCl, showed a decent yield of acetal-protected lignin (84.7%) and enzymatic conversion of acetal-protected cellulose after deprotection by acid hydrolysis (82.9%). Crucially, hemicelluloses-derived xylose was concurrently converted into additional DFX in situ during pretreatment, sustaining the delignification process. The spent DFX (including newly formed) was effectively recovered by crystallization and the isolated acetal-protected lignin was upgraded to monomers via hydrogenolysis at near-theoretical yields (46.5%). This work demonstrates a self-reinforcing cycle where a biomass component is transformed into the key solvent enabling efficient fractionation.
Keyword ：
Biomass Biomass Enzymatic hydrolysis Enzymatic hydrolysis Hansen solubility parameter Hansen solubility parameter Hydrogenolysis Hydrogenolysis Pretreatment Pretreatment
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| GB/T 7714 | Lv, Xianqing , Zhang, Zhuonan , Gong, Zhenggang et al. Efficient fractionation of lignocellulosic biomass with in-situ generated diformylxylose as renewable solvent [J]. | BIORESOURCE TECHNOLOGY , 2026 , 440 . |
| MLA | Lv, Xianqing et al. "Efficient fractionation of lignocellulosic biomass with in-situ generated diformylxylose as renewable solvent" . | BIORESOURCE TECHNOLOGY 440 (2026) . |
| APA | Lv, Xianqing , Zhang, Zhuonan , Gong, Zhenggang , Yang, Guangxu , Shuai, Li . Efficient fractionation of lignocellulosic biomass with in-situ generated diformylxylose as renewable solvent . | BIORESOURCE TECHNOLOGY , 2026 , 440 . |
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Classical production of construction particleboards with high-grade wood and formaldehyde-based binders induces forest depletion and pollution, calling for alternatives. Here, we designed in situ lignin bonding to transform low-grade woods into high-performance and formaldehyde-free particleboards. This method involves the deconstruction of fine wood particles to soften cell walls, eliminating undesirable water-soluble components while preserving lignin, followed by a thermo-compression molding procedure to facilitate the formation of a compact and cross-linked structure within softened wood particles. Results show that particleboard displays high mechanical strength with a rupture modulus of 66.7 MPa and excellent water resistance with a thickness swelling of 2.1%. The performance of particleboards is enhanced by low wood hardness, small particle size, removal of water-soluble fractions, and preservation of lignin. The self-adhesion technique is straightforward, practical, and scalable.
Keyword ：
Formaldehyde-free particleboard Formaldehyde-free particleboard Lignin Lignin Self-adhesion Self-adhesion Structural material Structural material Wood engineering Wood engineering Woody biomass Woody biomass
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| GB/T 7714 | Gong, Zhenggang , Yang, Guangxu , Chen, Liang et al. Self-adhesion lignin bonding for the production of particleboards from low-grade wood [J]. | ENVIRONMENTAL CHEMISTRY LETTERS , 2025 , 23 (5) : 1171-1176 . |
| MLA | Gong, Zhenggang et al. "Self-adhesion lignin bonding for the production of particleboards from low-grade wood" . | ENVIRONMENTAL CHEMISTRY LETTERS 23 . 5 (2025) : 1171-1176 . |
| APA | Gong, Zhenggang , Yang, Guangxu , Chen, Liang , Shuai, Li . Self-adhesion lignin bonding for the production of particleboards from low-grade wood . | ENVIRONMENTAL CHEMISTRY LETTERS , 2025 , 23 (5) , 1171-1176 . |
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Increasing efforts have been devoted to developing biobased and biodegradable plastics and composites from lignocellulosic biomass. Current bioplastic production entails multiple challenging steps including monomer production from biomass as well as polymer synthesis and modification. Here, we report a practical recombination strategy to transform agricultural residues into moldable cellulose-reinforced lignin (CRL) composites. The strategy involves deconstruction of biomass particles followed by thermo-compression molding of cellulose fibers and lignin mixtures. The resulting CRL composites demonstrated excellent mechanical and thermal properties as well as water, abrasive, and flame resistance. Mechanistic studies reveal that small particle size, removal of water-soluble fractions, as well as reservation of lignin and its cross-linking reactivity have considerably positive effects on preparation of high-quality composite items. These insights offer a versatile strategy for transforming various types of low-grade biomass, such as corn stover, into eco-friendly and potentially biodegradable or compostable composites that can serve as sustainable alternatives to traditional duroplast materials.
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| GB/T 7714 | Gong, Zhenggang , Weng, Xianggang , Wu, Deli et al. Recombination of agricultural residues into moldable composites [J]. | SCIENCE ADVANCES , 2025 , 11 (17) . |
| MLA | Gong, Zhenggang et al. "Recombination of agricultural residues into moldable composites" . | SCIENCE ADVANCES 11 . 17 (2025) . |
| APA | Gong, Zhenggang , Weng, Xianggang , Wu, Deli , Lei, Zhendong , Yang, Guangxu , Shuai, Li . Recombination of agricultural residues into moldable composites . | SCIENCE ADVANCES , 2025 , 11 (17) . |
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Enzymatic hydrolysis of cellulose in lignocelluloses exhibits low efficiency due to low cellulose accessibility and adverse lignin effects. By using phenylsulfonic acid pretreatment to improve cellulose accessibility, we have developed several new plant proteins such as corn germ and green rapeseed proteins that extracted from inexpensive defatted meals as lignin-blockers. For pretreated lignocellulosic substrates with high cellulose accessibility, such plant proteins could effectively overcome negative lignin effects and achieve robust cellulose enzymatic conversion (88-97 %) at a low cellulase loading of 5 FPU/g glucan. To reach the same level of cellulose enzymatic conversion, adding corn germ protein could save cellulase loading by 3.6 times as compared to those without lignin-blockers. But these plant proteins showed insignificant promotion effects on substrates with low cellulose accessibility. Overall, this study coupled high cellulose-accessible substrates and efficient ligninblockers to synergistically improve the profitability of lignocellulosic biorefinery.
Keyword ：
Cellulose accessibility Cellulose accessibility Enzymatic hydrolysis Enzymatic hydrolysis Lignin-blocker Lignin-blocker Lignocellulose Lignocellulose Plant protein Plant protein
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| GB/T 7714 | Yang, Guangxu , Gong, Zhenggang , Huang, Lizhen et al. Biobased lignin-blockers enable efficient production of glucose from lignocelluloses [J]. | INDUSTRIAL CROPS AND PRODUCTS , 2023 , 205 . |
| MLA | Yang, Guangxu et al. "Biobased lignin-blockers enable efficient production of glucose from lignocelluloses" . | INDUSTRIAL CROPS AND PRODUCTS 205 (2023) . |
| APA | Yang, Guangxu , Gong, Zhenggang , Huang, Lizhen , Luo, Xiaolin , Shuai, Li , Liu, Jing . Biobased lignin-blockers enable efficient production of glucose from lignocelluloses . | INDUSTRIAL CROPS AND PRODUCTS , 2023 , 205 . |
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Lignin is a phenolic polymer, making it a sustainable alternative to phenol for synthesizing lignin-phenol-formaldehyde (LPF) adhesives. However, technical lignins produced in pulping or biorefining processes are generally highly condensed and have low reactivity, limiting their uses in synthesizing phenolic-based adhesives. Herein, we report a two-step strategy to produce lignin-based wood adhesives with industrially available technical lignins through hydrodeoxygenation followed by acid-mediated methylolation of aromatic C2/6 positions to improve the flowability, water resistance, and crosslinking ability of lignins. We demonstrated that this biobased lignin-formaldehyde adhesive had a lighter color and far better adhesion performance compared to traditional LPF resins prepared from base-mediated methylolation of lignins. Mechanistic investigation suggests that the chemical crosslinking of methylolated lignin to form diarylmethane structures and the physical interlocking interaction at the interfaces of wood veneers contribute to the strength of plywood. A biobased lignin-formaldehyde (LF) adhesive was synthesized from industrially available technical lignins through hydrodeoxygenation followed by acid-mediated methylolation of aromatic C2/C6 positions.
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| GB/T 7714 | Yang, Guangxu , Gong, Zhenggang , Zhou, Bei et al. Hydrodeoxygenation of condensed lignins followed by acid-mediated methylolation enables preparation of lignin-based wood adhesives [J]. | GREEN CHEMISTRY , 2023 , 26 (2) . |
| MLA | Yang, Guangxu et al. "Hydrodeoxygenation of condensed lignins followed by acid-mediated methylolation enables preparation of lignin-based wood adhesives" . | GREEN CHEMISTRY 26 . 2 (2023) . |
| APA | Yang, Guangxu , Gong, Zhenggang , Zhou, Bei , Luo, Xiaolin , Liu, Jing , Du, Guanben et al. Hydrodeoxygenation of condensed lignins followed by acid-mediated methylolation enables preparation of lignin-based wood adhesives . | GREEN CHEMISTRY , 2023 , 26 (2) . |
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Plywood is widely used in construction, such as for flooring and interior walls, as well as in the manufacture of household items such as furniture and cabinets. Such items are made of wood veneers that are bonded together with adhesives such as urea-formaldehyde and phenol-formaldehyde resins1,2. Researchers in academia and industry have long aimed to synthesize lignin-phenol-formaldehyde resin adhesives using biomass-derived lignin, a phenolic polymer that can be used to substitute the petroleum-derived phenol3-6. However, lignin-phenol-formaldehyde resin adhesives are less attractive to plywood manufacturers than urea-formaldehyde and phenol-formaldehyde resins owing to their appearance and cost. Here we report a simple and practical strategy for preparing lignin-based wood adhesives from lignocellulosic biomass. Our strategy involves separation of uncondensed or slightly condensed lignins from biomass followed by direct application of a suspension of the lignin and water as an adhesive on wood veneers. Plywood products with superior performances could be prepared with such lignin adhesives at a wide range of hot-pressing temperatures, enabling the use of these adhesives as promising alternatives to traditional wood adhesives in different market segments. Mechanistic studies indicate that the adhesion mechanism of such lignin adhesives may involve softening of lignin by water, filling of vessels with softened lignin and crosslinking of lignins in adhesives with those in the cell wall. A straightforward strategy for preparing lignin-based wood adhesives from lignocellulosic biomass is described, with the resulting adhesives demonstrating performance attractive for plywood manufacture.
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| GB/T 7714 | Yang, Guangxu , Gong, Zhenggang , Luo, Xiaolin et al. Bonding wood with uncondensed lignins as adhesives [J]. | NATURE , 2023 , 621 (7979) : 511-, . |
| MLA | Yang, Guangxu et al. "Bonding wood with uncondensed lignins as adhesives" . | NATURE 621 . 7979 (2023) : 511-, . |
| APA | Yang, Guangxu , Gong, Zhenggang , Luo, Xiaolin , Chen, Lihui , Shuai, Li . Bonding wood with uncondensed lignins as adhesives . | NATURE , 2023 , 621 (7979) , 511-, . |
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Depolymerisation of lignin to well-identified aromatic chemicals has been recognized as one of the most promising ways to valorise lignin. Widely investigated hydrogenolysis and oxidative depolymerisation strategies selectively disrupt labile interunit C - O linkages (e.g., beta - O - 4 linkages) but are ineffective on the disruption of robust interunit C - C linkages (e.g., methylene linkages) in condensed technical lignins. Herein, an efficient phenol-assisted depolymerisation (PAD) process was developed to selectively celave methylene linkages in condensed lignins. In the process, phenol not only served as a solvent to facilitate lignin dissolution but also scavenged methylene linkages from condensed lignin polymers to facilitate the depolymerisation. Results showed that scavenging C alpha-induced methylene moieties resulted in monomers without a side chain whereas scavenging formaldehyde-induced methylene moieties led to monomers with side chains. Lignin monomers (or monophenols) yields up to 40 % and bisphenols yields up to 42 % could be achieved via the new PAD process, which were better than those resulting from existing depolymerisation methods. Besides, the residual polyphenols could be used to synthesize lignin-formaldehyde adhesives for plywood applications. We anticipate that this practical lignin valorisation method would create additional revenue for the pulp industry and enable economic biorefineries.
Keyword ：
Biomass Biomass Condensation Condensation Depolymerisation Depolymerisation Lignin Lignin Phenol Phenol
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| GB/T 7714 | Gong, Zhenggang , Yang, Guangxu , Huang, Liulian et al. Phenol-assisted depolymerisation of condensed lignins to mono-/ poly-phenols and bisphenols [J]. | CHEMICAL ENGINEERING JOURNAL , 2023 , 455 . |
| MLA | Gong, Zhenggang et al. "Phenol-assisted depolymerisation of condensed lignins to mono-/ poly-phenols and bisphenols" . | CHEMICAL ENGINEERING JOURNAL 455 (2023) . |
| APA | Gong, Zhenggang , Yang, Guangxu , Huang, Liulian , Chen, Lihui , Luo, Xiaolin , Shuai, Li . Phenol-assisted depolymerisation of condensed lignins to mono-/ poly-phenols and bisphenols . | CHEMICAL ENGINEERING JOURNAL , 2023 , 455 . |
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本发明属于化工技术领域，具体涉及一种从木质生物质中提取木质素并将木质素用作木材胶黏剂的方法。本发明创造性地在木质素提取过程中加入改性剂，使得所提取的木质素在热压时具有自交联的性能以用作胶黏剂。在木质素改性后，再利用木质素不溶于水的特性，采用蒸馏、水析等步骤去除溶剂中剩余的改性剂，避免了木质素在交联过程中释放甲醛等游离改性剂。该方法可实现直接利用天然胶黏剂替代石油化工来源的胶黏剂，如酚醛树脂、脲醛树脂等，解决了生物炼制产业木质素难以高附加值利用的关键问题，能有效推动生物质化工产业的发展，并提供一种全新的绿色环保的胶黏剂。
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| GB/T 7714 | 帅李 , 罗小林 , 杨光绪 . 一种从木质生物质提取木质素作为胶黏剂的方法 : CN202210489178.1[P]. | 2022-05-07 . |
| MLA | 帅李 et al. "一种从木质生物质提取木质素作为胶黏剂的方法" : CN202210489178.1. | 2022-05-07 . |
| APA | 帅李 , 罗小林 , 杨光绪 . 一种从木质生物质提取木质素作为胶黏剂的方法 : CN202210489178.1. | 2022-05-07 . |
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Lignin structural analysis is important for the comprehensive utilization of lignin as well as delignification and bleaching during pulping while it is difficult to completely elucidate lignin structure due to its structural complexity and heterogeneity. Depolymerization of lignin into simple monomers via alkaline cupric oxide oxidation (Ox(CuO)) followed by chromatographic analysis of the monomers is an effective method for lignin structural analysis. Here we revisited the Ox(CuO) of lignin model compounds (monomers and dimers) and three representative lignocelluloses (i.e., Eucalyptus, Masson pine, and corn stover) to understand the effects of reaction conditions and lignin sub-structures on oxidation product yields and distributions. The improved Ox(CuO) was found to be effective in oxidatively breaking the robust interunit C-C bonds in the beta-beta & PRIME; and beta-5 & PRIME; moieties of lignin other than beta-O-4 & PRIME; linkages at an elevated temperature (210 & DEG;C). Further degradation of the monomeric oxidation products could also occur to reduce the monomer yields under a severe condition (i.e., high temperature and long reaction time). In addition, O-2 inputs could reduce the monomer yields via nonselective overoxidation, thus having negative effects on accurate structural analysis of lignin. The O-2 removal via ultrasonication combined with N-2 flushing prior to the oxidation reaction could improve the monomer yield about 1.2 times (compared to that without O-2 removal) at a low biomass loading of 5 wt%. By using the improved method of Ox(CuO), a monomer yield of 71.9% could be achieved from Eucalyptus (hardwood) lignin, which was much higher than conventional nitrobenzene oxidation (59.8%) and reductive depolymerization (51.9%). Considering the low cost, high availability, and low toxicity of CuO, the improved Ox(CuO) could be a convenient and economic method for more accurate lignin structural analysis.
Keyword ：
cupric oxide cupric oxide depolymerization depolymerization lignin lignin model compounds model compounds oxidation oxidation
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| GB/T 7714 | Yang, Guangxu , Gong, Zhenggang , Luo, Xiaolin et al. Revisiting alkaline cupric oxide oxidation method for lignin structural analysis [J]. | FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY , 2022 , 10 . |
| MLA | Yang, Guangxu et al. "Revisiting alkaline cupric oxide oxidation method for lignin structural analysis" . | FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY 10 (2022) . |
| APA | Yang, Guangxu , Gong, Zhenggang , Luo, Xiaolin , Shuai, Li . Revisiting alkaline cupric oxide oxidation method for lignin structural analysis . | FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY , 2022 , 10 . |
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本发明公开了一种将木质纤维素一锅法转化为酚类化合物、多元醇和有机酸的方法。该方法利用浓度较高的强碱溶液在较高的温度下实现了对木质纤维素中木质素、纤维素以及半纤维素的同步转化，且其中金属氧化物主导的氧化体系或贵金属主导的加氢体系可快速转化木质素纤维素分解的中间产物，有效避免中间产物(如木质素水解产物以及碳水化合物逆羟醛产物)的非选择性转化或聚合，将中间产物转化为相对稳定的产物(酚类化合物以及多元醇和有机酸)，在一锅内实现木质纤维素主要组分(木质素和碳水化合物)向产物的一步高效转化，以避免传统的先对木质纤维素组分分离再对组分分别催化转化的多步反应策略，提高木质纤维素全组分综合炼制的效率和经济性。
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| GB/T 7714 | 帅李 , 罗小林 , 龚正刚 et al. 将木质纤维素一锅法转化为酚类化合物、多元醇和有机酸的方法 : CN202110212524.7[P]. | 2021-02-25 . |
| MLA | 帅李 et al. "将木质纤维素一锅法转化为酚类化合物、多元醇和有机酸的方法" : CN202110212524.7. | 2021-02-25 . |
| APA | 帅李 , 罗小林 , 龚正刚 , 杨光绪 . 将木质纤维素一锅法转化为酚类化合物、多元醇和有机酸的方法 : CN202110212524.7. | 2021-02-25 . |
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